Script fails with error code 80040E31 - sql-server

Question

We have a VBScript that downloads chunks of data from an SAP Business Object database into so-called slices, which are basically .csv files. The script worked perfectly so far, I haven't really had to look into it at all. But the failure now is this:
The script file section this error refers to is the dbConn.Execute(strSQL) line in the below code (5th from below).
What I tried so far, was to add these commands but they don't seem to solve anything:
'dbConn.ConnectionTimeout = 100
'dbConn.CommandTimeout = 100
The script itself (not all of it, I'm not sure the rest is needed):
Sub subRunFilesInFolder(strFolder)
Dim FSO, objFolder, objFiles
Dim i, intTS, intTS_file_start, ts, tsKillBefore, TS_file_start, strModelName
Dim dbConn, RST, RST2, strSQL
Dim strVBSmodel
Dim blRunIt
'INIs
strModelName = "bo_vbs_runner_1.5 "
strConn = "DRIVER={SQL Server};SERVER=EUBASEURCIREP01;UID=ser_login;PWD=ser_login;DATABASE=ser"
strComputer = FunstrComputerName
strBORunner = "\\Eubaseurcirep01\reporting\DEVELOPMENT\BO\Automation\Models\BO_auto_run.xlsb"
'Sets
Set dbConn = CreateObject("ADODB.Connection")
Set RST = CreateObject("ADODB.RecordSet")
Set RST2 = CreateObject("ADODB.RecordSet")
Set WshShell = WScript.CreateObject("WScript.Shell")
Set FSO = Wscript.CreateObject("Scripting.FileSystemObject")
Set objFolder = FSO.GetFolder(strFolder)
Set objFiles = objFolder.Files
Set appExcel = CreateObject("Excel.Application")
'dbConn.ConnectionTimeout = 100
'dbConn.CommandTimeout = 100
strVBSmodel = strModelName & strComputer & " " & FunstrUserName & " " & funCurrProcessId & " " & FunGetProcessIDCurrentOfExcel(strComputer)
appExcel.Application.Visible = False
appExcel.Displayalerts = False
Set objBORunner = appExcel.Workbooks.Open(strBORunner)
dbConn.Open strConn
ts = FunGetServerNow(dbConn,RST)
tsKillBefore = DateAdd("N", -15, ts)
intTS = funTimeStampToInteger(FunGetServerNow(dbConn, RST))
'Get ReportDate
strSQL = "SELECT yyyymmdd FROM map.reportdate WHERE dtAct=cast(GETDATE() as DATE);"
RST.Open strSQL, dbConn
If RST.EOF Then
strReportDate="99991231"
Else
strReportDate=RST.fields(0).value
End If
RST.close
'Kill stucked excel and vbs processes
strSQL = "SELECT distinct * FROM [ser].[bo].[_log] WHERE [proc]='BO VBS' AND result_text='started' AND end_timestamp<" & funTimeStampToInteger(tsKillBefore) & _
" AND lower(model) like '% " & LCase(strComputer) & " %';"
RST.Open strSQL,dbConn
If RST.EOF Then 'Nothing to kill
Else
Do While Not RST.EOF
strOldVBS = split(RST.fields("model"), " ")(3)
strOldExcel = split(RST.fields("model"), " ")(4)
Call SubKillProcessIDOnstrComputer(strComputer, strOldVBS)
Call SubKillProcessIDOnstrComputer(strComputer, strOldExcel)
strSQL = "UPDATE [ser].[bo].[_log] SET result_text='stopped', end_timestamp='" & funTimeStampToInteger(FunGetServerNow(dbConn,RST2)) & "' " & _
"WHERE [proc]='BO VBS' AND result_text='started' AND model='" & RST.fields("model").value & "' AND parameters='" & _
RST.fields("parameters").value & "';"
dbConn.Execute(strSQL)
RST.MoveNext
Loop
End If
RST.close

Answer 1

To Decode 0x8004nnnn Errors
HResults with facility code 4 means the HResult contains OLE errors (0x0 =
to 0x1ff) while the rest of the range (0x200 onwards) is component =
specific errors so 20e from one component will have a different meaning =
to 20e from another component.
You are lucky as your component is telling you it's OLDB with it's error - TIMEOUT